Company lists · Data refreshed September 2026

Top 25 Geothermal exploration companies based in France

Name: Geothermal exploration companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 74 companies tracked

RevenueBase identified 74 geothermal exploration companies headquartered in France as of September 2026 and tracks 780 professional contacts across them, including 276 with verified work emails. Orleans is the largest hub.

This list covers geothermal exploration companies headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

74Companies

780Contacts tracked

276Verified emails

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The 25 largest geothermal exploration companies based in France

Ranked by team size

Top 25 of 74 geothermal exploration companies based in France, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal exploration companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Beicip-Franlab	Indirect evidence	Rueil-malmaison, FranceHQ checked Sep 20, 2026	51-200	212 contacts →
	Indirect evidence “Beicip-Franlab is a leading Energy Consultancy and Software Editor created in the 1960's with recognized worldwide hands-on expertise.” Source: RevenueBase Database · checked Sep 20, 2026
2	CFG Geothermal	Indirect evidence	Orleans, FranceHQ checked Sep 20, 2026	11-50	46 contacts →
	Indirect evidence “CFG Services est une société de services et d’ingénierie, filiale à 100% du BRGM, spécialisée en géothermie qui dès le début des années 80 a été pionnière dans le développement…” Source: RevenueBase Database · checked Sep 20, 2026
3	Gexplore	Partial evidence	Ludres, FranceHQ checked Sep 20, 2026	11-50	41 contacts →
	Partial evidence “GexplOre \| Specialists in Geology, Geophysics, Well Logging & Mining Consultation GexplOre is a leader in geological exploration, providing consulting services and integrated…” Source: RevenueBase Database · checked Sep 20, 2026
4	Realtimeseismic	Indirect evidence	Pau, FranceHQ checked Sep 20, 2026	11-50	37 contacts →
	Indirect evidence “Realtimeseismic is a leading geophysics services and technology solutions company – we are passionate about innovating to bring agile, accurate geophysics solutions to our valued…” Source: RevenueBase Database · checked Sep 20, 2026
5	Mantle8	Indirect evidence	Grenoble, FranceHQ checked Sep 20, 2026	11-50	22 contacts →
	Indirect evidence “We are a new generation of geologists leading the energy revolution by locating the Earth’s naturally occurring hydrogen reservoirs.” Source: RevenueBase Database · checked Sep 20, 2026
6	Geosophy	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect evidence “Vous souhaitez valoriser votre patrimoine immobilier, maîtriser sa consommation énergétique en lui assurant un approvisionnement local pour son confort thermique?” Source: RevenueBase Database · checked Sep 20, 2026
7	Cotrasol	Indirect evidence	Acheres, FranceHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “COTRASOL est une entreprise de forage pour l'eau et la géothermie, depuis 1963 nous réalisons des captages d'eau pour le bâtiment, l'adduction d'eau potable, l'irrigation…” Source: RevenueBase Database · checked Sep 20, 2026
8	Stratégéo Conseil	Indirect evidence	Grigny, FranceHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “StratéGéO Conseil est un bureau d'étude en Géothermie & Hydrogéologie basé au 26 rue des Carriers Italiens à Grigny (91), intervenant sur tout le territoire national.” Source: RevenueBase Database · checked Sep 20, 2026
9	TLS Geothermics	Partial evidence	Toulouse, FranceHQ checked Sep 20, 2026	11-50	16 contacts →
	Partial evidence “TLS Geothermics is a geoscience tech company, exploring and developing geothermal projects for power, heat, cold and byproducts.” Source: RevenueBase Database · checked Sep 20, 2026
10	Drillheat	Indirect evidence	Maisse (91), FranceHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “Expert en forage géothermique de surface.” Source: RevenueBase Database · checked Sep 20, 2026
11	Geother	Partial evidence	Nanterre, FranceHQ checked Sep 20, 2026	1-10	14 contacts →
	Partial evidence “GEOTHER is an engineering and consulting company specializing in geothermal energy and, in a general way, in renewable energies, groundwater management and hydrogeotechnics.” Source: RevenueBase Database · checked Sep 20, 2026
12	Look UP Geoscience	Partial evidence	Montpellier, FranceHQ checked Sep 20, 2026	11-50	13 contacts →
	Partial evidence “De-risk your low-carbon subsurface exploration projects!” Source: RevenueBase Database · checked Sep 20, 2026
13	Ingen Innovations Geosciences	Indirect evidence	St Apollinaire, FranceHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “Chez INGEN INNOVATIONS GEOSCIENCES, nous nous engageons à repousser les limites de la technologie pour fournir des solutions innovantes en géologie et géophysique, adaptées aux…” Source: RevenueBase Database · checked Sep 20, 2026
14	Geofluid	Partial evidence	Roissy-En-France, FranceHQ checked Sep 20, 2026	11-50	8 contacts →
	Partial evidence “GEOFLUID is a geothermal engineering and service company based in FRANCE, France.” Source: RevenueBase Database · checked Sep 20, 2026
15	Géotec Energie	Indirect evidence	Plaisir, FranceHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “La société Géotec Energie, filiale du Groupe Géotec, est spécialisée dans la réalisation de forages géothermiques sur sondes.” Source: RevenueBase Database · checked Sep 20, 2026
16	Geothermaq	Partial evidence	Pau, FranceHQ checked Sep 20, 2026	1-10	7 contacts →
	Partial evidence “GEOTHERMAQ est une société résolument engagée dans la transition énergétique.” Source: RevenueBase Database · checked Sep 20, 2026
17	Terrensis	Partial evidence	Strasbourg, FranceHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial evidence “Terrensis est une entreprise d’exploration production d’hydrogène naturel.” Source: RevenueBase Database · checked Sep 20, 2026
18	Auvergne Forage	Indirect evidence	Lezoux, FranceHQ checked Sep 20, 2026	1-10	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
19	Ingen Logging	Indirect evidence	Saint Apollinaire, FranceHQ checked Sep 20, 2026	1-10	5 contacts →
	Indirect evidence “INGEN LOGGING relies on the geological and geophysical expertise of INGEN Innovations Geosciences to develop the most advanced Surface Logging Cabin and services on the market to…” Source: RevenueBase Database · checked Sep 20, 2026
20	Enerex	Indirect evidence	Vandoeuvre-lès-nancy, FranceHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “Created in early 2020 in Nancy, ENEREX works on the field of new energies and unconventional reservoirs prospection.” Source: RevenueBase Database · checked Sep 20, 2026
21	Youwol Geoscience	Indirect evidence	Pérols, FranceHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “YouWol Geoscience focuses on technology development and services related to Geoscience, built over 25 years of expertise through university (Stanford University, Montpellier…” Source: RevenueBase Database · checked Sep 20, 2026
22	Infogeo	Partial evidence	Guyancourt, FranceHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial evidence “INFOGEO est un producteur de connaissances géologiques pour les projets d'exploration du sous-sol en lien avec la transition énergétique (gisements de métaux critiques ou de…” Source: RevenueBase Database · checked Sep 20, 2026
23	GPC Instrumentation Process	Indirect evidence	Roissy En France, FranceHQ checked Sep 20, 2026	1-10	2 contacts →
	Indirect evidence “GPC INSTRUMENTATION PROCESS GPC INSTRUMENTATION PROCESS (GPC IP) is a consulting engineers bureau and a service company created in 1989 from a nucleus of professionals experienced…” Source: RevenueBase Database · checked Sep 20, 2026
24	Wisearth EX Vestallia	Indirect evidence	Marseille, FranceHQ checked Sep 20, 2026	1-10	1 contacts →
	Indirect evidence “Wisearth est une entreprise spécialisée dans la géothermie de surface, proposant des solutions de forage sur sondes pour chauffer et rafraîchir nos bâtiments.” Source: RevenueBase Database · checked Sep 20, 2026
25	Pluton DG	Indirect evidence	Cestas, FranceHQ checked Sep 20, 2026	1-10	1 contacts →
	Indirect evidence “PLUTON DG offers Advisory services, project assistance and courses for a good integration of the risks assessment & management in your project Domains of expertise are- Drilling…” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: geothermal exploration companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names geothermal exploration companies.
Partial evidence: Its own public description names part of geothermal exploration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal exploration companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 74 geothermal exploration companies based in France

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Geothermal exploration companies based in France at a glance

As of Sep 20, 2026

35.4%Verified-email coverage

10.5Average contacts per company

1-10Median size (employees)

8.1%Largest-city concentration · Orleans

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 74 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among geothermal exploration companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “geothermal exploration companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names geothermal exploration companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among geothermal exploration companies, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 276 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names geothermal exploration companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many geothermal exploration companies are there based in France?

RevenueBase identified 74 geothermal exploration companies headquartered in France as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Beicip-Franlab, headquartered in Rueil-Malmaison, tops this list with the largest team on record.

Which city has the most geothermal exploration companies?

Orleans leads with 6 headquartered companies, followed by Pau (5) and Rueil-Malmaison (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 276 verified decision-maker contacts tracked across these 74 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.